Heat-exchange apparatus



May 26, 1925.

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ATTORNEY.

Patented May- 26,A 1925.

UNITED STATES `PATENT I'()FFICE.`

KARL IMUHLIEJSII?.N 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR `T0 SCHU'ITE AND KOERTING COMPANY, 0F PHILADELPHIA, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.

HEAT-EXCHANGE APPARATUS.

Application tiled March 29, 1923. Serial No. 628,430.

To all whom it may concern:

Be. it known that I, KARL MUHLEISEN, a citizen of the United States, and a "resident of Philadelphia, in the county'of Philadelphia andState of Pennsylvania, have invented an Improvement in- Heat-Exchange Apparatus, of which thefollowing is a specification. v

My invention relates to heat exchange apparatus 1n which each unit or apparatus comprisesa tubular casing in which casingv is situated a plrality of tubes the opposite ends of which aresecured in tube plates, and the general object of the invention is to provide a novel construction of means whereby there may be relative movement be-l tween the inclosing casing and the tubes therein due to inequalities of expansion of the tubes and their surrounding casing.

A further object of the invention is to provide an improved and novel lconstruction of means for` retaining packing in operative relation to one of the tube plates and for adjusting and tightening the same' in case adjustment and tightening may become necessary.

lt frequently happens that a plurality of heat exchange apparatus units are connected together so that the fluids between which an interchange of'heat is to be effected flow in opposite directions successively through the said units; hence it is a further object of my invention to connect the. said units together in such manner that relative movement between the said connected units due to any inequalities in the expansion thereof shall not be interfered with. f

To these and other ends my invention comprehends the construction as hereinafter fully described, particularly pointed out in the claims, and as illustrated in the accompanying drawing forming a part of this specification and in which I have illustrated one form of mechanical embodiment of heat exchange apparatus embodying my invention. However, it will be understood that,V

myV invention is suceptible of embodiment in other forms of construction than that lshown and that changes in the details thereof may be made within the scope of the claims without departing from the said invention.

threaded bolts 7 In the drawing:

Fig.' 1 is a longitudinal sectional view of paratus unit, which casingin the construction hown, ismade u of a'plurality of tubular members or sections @,b, o and d, ras

shown. Referring for the moment to theiapf paratus shown in Fig. 1 it will be noted that the member or section a is provided with aport 2 comprising a short tubular portion,

having at its outer end a laterally extending flange 3. The outer Rend l of the section a is closed by means of a head plate 4, in the usual manner. The inner end of the section a isprovided with a-laterally Aextending flange 5 which is situated in opposed relai tion with respect to ,a flange 6 upon the adjacent member or -section b. These flanges are secured together by means of screw 8 designates a relatively stationary tube plate the outer peripheral edge of which is ,clamped between the adjacent endskof the'members or sections a and b. The tube plate 8 is provided. with a v series or'plurality of openings therein in which one end of each of a plurality or series of tubes 10 is secured. At their opposite ends each of the said tubes 10 is secured in an opening in a tube plate 'l5 which is adapted for movement relatively to the section d within which it is situated. The peripheral surface of the tube plate is seated against an inwardly extending bearing rib 16. integral with the member d. The said tube plate 15 is providedv at its peripheral.

edge with an outwardly extending flange 20 which isl concentric with the member orsection 0l and which is spaced from the inside in place within the pocket 21 I have provided an adjustable member or device which comprisesjla ring 23 which is situated within or which projects into the pocket 21 above the packing 22 therein. The ring 23 is connected, integrally in the construction shown, with spaced bars 25, the outer ends of which are connected, integrally in ithe construction shown, to a flange .26 extending outwardly-from an annular member 27 situated within and spaced from the interior surface of the outer end portion of the member or section d of the casing. The outer edge of the flange 26 contacts and fits closely but movably within the outer end portion of the said member or section d. The flange 26 and -the annular member 27 form with the adjacent portion of the member or section Z a pocket or chamber 30 within which is seated a body of packing material 31. Said packing material is adapted to be compressed and held in place within the pocket 30 by means of a flange 32, operating as av gland, which projects `inwardly from the inner side of the head plate 33. The head plate 33 is of greater diameter than the exterior diameter of the member or section al so that the outer edge portion thereof pro-l jects beyond the outer edge of the adjacent end of the said member. The member al is provided adjacent its end with a laterally and outwardly extending flange 35 having screw threaded openings therein with which the screw threaded bolts 36 are adapted to f engage for securing the said head plate 33 to the adjacent 'outer end portion of' the member d with the gland 432 projecting into the pocket 3() previously referred to. The

bolts 36 extend through openings adjacentv the outer peripheral edge of the head plate 33. The lscrew threaded opening 37 inthe head plate 33 is for the reception of an eyen bolt or equivalent means to facilitate the handling of the said late.

Preferably, thoug outer side of the bearing rib 16 is inclined inwardly and at an acute angle to the axis of the apparatus, and the inner edge of the away from the axis of the apparatus, while the inner edge of the gland 32 isinclined inwardly with the result that upon the tightening of the screw bolts 36 for adjustment or tightening of the packing masses 31` and 22Jthe packing 31 is compressed more tightly than7 otherwise might be the' case against the `essential or necessary.

not necessarily, the

adjacent inner surface of the member or section d. 4

It will be noted that the member or section Z) is provided with an outlet port 40 comprising a short tubular member having a laterally extending flange 41.

The member or section d is provided with ports 42 and 43. The orts 42 and 43 comprise short tubular sect1ons having laterally extending flanges 44 at their outer ends, the adjacent edges of which maybe integral as shown. Such integrality is not, however` ppositely disposed portions of the port 43 are flared outwardly as indicated at 45 so as to enlarge the opening into that portion of the section d within which the bars 25 are situated, so as to com` pensate for the retardation that might be offered by the said bars to the passage of a fluid therethrough.

Assuming that a hotl fluid, such as oil, enters the port 2 from a source not shown; it will flow through the tubes 10 and into the chamber between the tube plate 15 and thehead plate 33 and outwardly through the port 43. Simultaneously with the passage'of the hot oil through the tubes 10 a counter-moving fluid, such as cold oil, is flowing through the casing in the opposite direction. Such counter-moving or flowing fluid is bailled from side to side of the casing by means of the baffle plates 50 which ducted through a conduit (not shown) to' any desired destination, nptshown..

In case a plurality of heat exchange unitsVV are connected together to form a larger unit, as indicated in- Fig. 3, the hot oil or other fluid, which flows through the tubes 10, is conducted from the first of the series of the units ofthe apparatus, which I have designated in Fig. 3 by the reference letter A, and thence successively through the tubes 10 of the successive apparatus B, C and D, finally issuingfrom the latter through an outlet port at 51, similar t-o the port 2.

In the case of an apparatus consisting-ot` alplurality of units secured together as indicated in Fig. 3 the` cold oil or other fluid which is adapted to be heated enters the member or unit D through a port at 52 similary to the port 40 and flows through the casings surrounding the tubes in the separate units D, C, B, A in counter-direction to the flow of hot fluid through the tubes 10, and finally is discharged at 40.

At their opposite'ends the members A and B* are slidably connected. Such connection is eli'ected by providing flanges 62 uponvthe outer ends ofthe members or sections b' through which slots/are` provided. Interposed between the said flanges is a pedestal 68 having flanges 64 at its opposite-ends through' which slots are provided. Bolts'6`5 extend through the slots in the-flanges 62 and 64 and connectthe same together. The

connection listsufliciently loose to permit relative slidingmovement between the separate units vA and B. Simllar connections are effected between the separate units or members B and C and likewise between Vthe separate units or members C and`D,so that there may be relative sliding` movement between the various members A, B, C and D, which may be due to any inequalities of expansion thereof.

It will be seen that by my invention 4I have provided means whereby there 'may be relative movement between the tubes and the casings within which the said tubes are situated, and in the case of` a structure comprising a plurality of heat exchange units secured together as described, andas shown in Fig. 3, there may. be simultaneous relative movementbetween the said connected units. v j

It will also be seen that by my invention I have provided means whereby the two masses or bodies of packing material 22 and 3l may be simultaneously adjusted and compressed, and whereby also the body of packing which surrounds a portion of the said tube platelnaybe compressed firmly against the-latter, 'and whereby the other body of packing, may be'- compressed firmly against the inner'surface of thecasing within which the tubes. and the tube plate are situated.

This latter feature ofconstruction is of par- A 'tieiilar importancev because it insures that tl1e"-fliiid which may be'flowing through the tubes 10 shall' not' become mixedwiththat Vflowing through the casing exteriorly of and Patentis:

surrounding the said-tubes.

Having thus described myl inventibn, what 'Iclalm andH desire to secure by Letters exchange apparatus, the -com- 1 of each of said tubes is connected, the said tube plate having at its peripheral edge an outwardly extending flange which is spaced from the inner surface of the said casing, packing within the space between the said fiange and the said casing, a head plate for closing the adjacent end of said casing, `which head plate is adjustable axially `of said casing and means intermediate the said head plate I,and the saidv packing' whereby upon adjustment of the said' head plate inwardly'the said packing is compressed.'

2. In heat exchange apparatus, the combination of afcasng having an inwardly extending 4annular rib upon its inner surface near one ,end thereof, a plurality of tubes situatedtw'ithiny said casing, a tube plate adapted to have relative movement with respect to said casing, the peripheral surface of. said tube plate contacting with the inner surface of said rib, aud one -end of each of said tubes being secured in openings through said tube plate, and the vsaid tube plate having a flange adjacentI its peripheral edge, which flange extends outwardly and forms with the said rib and the adjacent portion of the said easing a pocket, packing material within said pocket, ahead plate. for closing the adjacent end portion of said casing, a memberinterposed between the said head plate and the said packing, said member comprising an outer portion forming-with the adjacent inner portion of the said'casing a pocket, packing material within said pocket, andthe said head plate .having an inwardly extending flange in engagement with the last mentioned-packing, and means for adjusting the said head plate toward theend of the saidcasing to exert pressure upon thelast mentioned packing and upon the said intermediate member, substantially as described.

3. In 'heat exchange apparatus, the com` bination of a casing having/tube plates adjacent' the opposite ends thereof, which pla-tes are provided with openings therethrough, and one of which `is stationary and the other one of which is movable relative to the casing, a plurality of tubes withri the casing having their opposite ends secured in the openings in 'said plates, and a portion-of the peripheral edge ofthe said relatively movable platebeing spaced from and forming with'a portion of said casing '120 a pocket, ahead plate for closing the end of said casing adjacent. the said relatively movable tube plate, a member intermediate the said head plate 'and the said'relatively movable tube plate, the outer end portion of said member forming withy an; adjacent ortion of ty Lsaid casing-a pocket, a packmass ch of the said pockets, and a flange extending inwardly from the said head plate" whereby upon inward' adjustment of the said head plate toward the adjacent end of the said casing the said packing masses are compressed.

4. In heat exc nge apparatus, thel combination of a casing, a plurality of tubes therein, tube plates adjacent the opposite ends of said casing having openingsitherethrough in which the opposite ends of the said tubes arev secured, one ot'l said tube plates being movable relative to the casing and having means for spacing a portion of lts periphery from an adjacent portion of the said casing, acking within the space between the perip ery of said` plate and the said casing, a head plate adjustably secured to the adjacent end of said casing, said head plate having an inwardly extending flange which is adapted to project into the said c a-slng, a membersituated between said head plate and said-relatively movable tube plate, the opposite ends of which terminate in annular menibers,the inner of which extends intotlie space between the periphery ot' the said relatively movable-tube plate and said casing andjcontacts with the packing in said space, and the outer of which is provided with an external cut-away portion thereby forming a space between the said outer portion and the adjacent portion of said casing, and packing within said space withV which the inner edge of the inwardly projecting an'ge from the said head plate is adapted to contact.

5. In heat exchange apparatus, the combination of a'casing, a plurality of tubes therein, tube plates situated near-the opposite ends of said casing, which-plates are provided with openings therethrough in.

which the opposite ends ot" the said tubes are secured, and one ot the said plates being movable relative to the casing, packing intermediate the periphery of said relatively movable plate and the adjacent portion of the said casing, a head plate having a flange' upon its inner side which is adapted to project into the adjacent inner lend of the said easing, a member situated' within the said casing between the said head and the said relatively movable tube plate, the inner and outer ends of said member terminating in annular portions which are connected by spaced bars, the inner of said annular por- -tions being adapted to contact with the said packing, and packing between the said outer said head plate the two portions of packing are compressed.

6. In heat excbange'apparatus, the combination of a casing, a plurality of tubes therein, tube plates near the opposite ends of said casing, which plates are provided with openings therethrough in which" the opposite ends of said tubes are secured, one of said plates being movable relative to the casing, packing interposed between the peripheral portion of the latter plate. and the adjacent portion of the said casing, a member'situated within the said casing and having an inner portion adapted to contact with the said packing, packing interposed be tween a portion ot the periphery of the outer end portion 'otl said member and the said casing, and means whereby upon the exertion of pressure uponithe outer edge of theglast named packing the said packing 1s forged outwardly against `the said casing while simultaneously the first named packing is forced inwardly against the periphery of the said relatively movable tube plate.

7. In heat exchange apparatus, the combination ot' a casing, a plurality oftubes therein, tube plates" situated near the opposite ends of said casing, which plates are provided with openings therethrough in which the opposite ends of said tubes are secured, one of which plates is movable relative to the casino, packing between the periphery of. the said relativelyv movable plate and the said casing, a head plate adjustable axially of said casing, and means interposed between said head plate and the said pack-y ing whereby upon inward adjustment of said head plate the said packing is compressed.

In testimony that'I claim the foregoing `as mv invention I have hereunto signed my name this`26th day of March, A. I). 1923. KARL MUHLEISEN. 

